linuxPackages.liquidtux: set meta.broken

This avoids Hydra (and others) attempting builds that would fail.
https://github.com/NixOS/nixpkgs/pull/150997#issuecomment-998686413

pkgs/os-specific/linux/liquidtux/default.nix

@@ -29,5 +29,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     platforms = [ "x86_64-linux" "i686-linux" ];
     maintainers = with maintainers; [ nickhu ];
+    broken = lib.versionOlder kernel.version "5.10";
   };
 }